Adding Read More Excerpt to Page

Hello, my website is houseislandportland.com and I am trying to add the “read more” button to the page houseislandportland.com/cappys-lodge . I tried to add it after the first paragraph so the bullet points come down when you click “read more”
I first tried clicking the read more button in visual/then tried clicking it in text editor and neither of these times it worked
All of the articles I found were with blog posts but i am working on A PAGE and I need help with why it won’t work on the page!

thanks